Grinding-machine.



PATENT OFFICE.

CHARLES L. GARGAN, OF ROCHESTER, NEW YORK.

Garantire-MACHINE Specification of Letters Patent.

Patente r en. 22, 1916.

Application filed August 3, 1914. Serial No. 854,740.

To all whom 'it may concern.'

Be it known that I, CHARLES L. GARGAN, of Rochester, in the county of Monroe and State of New York, have invented a new and useful Improvement in Grinding-Machines, which improvement is fully set forth in the following specification and shown in the aocompanying drawings.

The present invention relates to a grinding machine .and an object of the same is to provide a machine designed for use in automobile garages or other small shop for repairing automobiles and small marine engines preferably of that type in which the cylinders have one end permanently closed.

To these and other ends, the invention consists in certain parts and combinations of parts all of -which will be hereinafter described, the novel features being pointed out in the appended claims..

In the drawings z, Figure 1l is a vertical section through the machine adjusted for grinding purposes, a cylinder being attached thereto7 and parts of the machine being shown in elevation; l? ig. 2 is a section on the line a-a, Fig. 1; Fig. 3 is a section on the line b-), Figi 1; Fig. 1 is a sectional view Ashowing the centering device for centering the cylinder upon the machine; Fig. 5 shows a side elevation of the rear end of .the machine; Fig. 6 is a detail sectional view of the centering device; and Fig. 7 is a detail view of one of the work supporting devices. A

Referring more particularly to the drawings, 1 indicates a frame which may be of any suitable construction. Supported on this frame is an opemended bearing sleeve 2 which projects from Athe frame 1 and is pro-' vided at its free end with a face plate 3. This face plate may be formed with a plu rality of bolt openings so as to adapt it to support a plurality of work-supporting devices 5 which may be substantially Z-shape in form. The two parallel arms of each work-supporting device 5 are provided with slots 6, and bolts 7 pass through thesevslots and the bolt opening in the plate 3 for securing the work-supporting devices to said plate 3. Against the outer end of these worksupporting devices, the cylinder 8 is adapted to be supported by passing bolts 9 through the slots 6 at the outer ends of the Z-shaped members 5 w1 rin-mmh Hw usual bolt openand the other end provided with the l\ut wardly-extending flange 10.

Within the bearing sleeve 2, a hollow shaft 11 turns. said shaft being also axially 'movable within the sleeve 2 and being muchA longer than the sleeve'Qiso as to project from opposite ends thereof. Rotation of this hollow shaft 11 may be effected in any suitable manner but it is preferred-to employ a worm wheel 12 Wh'rrliis journaled on the end of the sleeve 9 and held` thereto by projections 13 operating within an annular groove in a hub of the worm 'wheel 12. The worm wheel 12 has a key or rib 14 which operates within a slot 15 of the hollow shaft l1 and communicates motion to said shaft while permitting the shaft to move axially with relation to said worm wheel which may be driven by a worm 16 operated by any suitable means (notshown). Y

For moving the hollow shaft axially, suitable means may be employed. In this instance, on the inner end of the shaft, two collars 17 are removably secured in spaced relation and, between the collars, a' ring 18 is arranged to permit the hollowl shaft 11 to turn therein. This ring 18 carries a nut l9A through which operates a screw 20 rigidly supported at 21 on the frame 1 and having a beveled gear 22 thereon meshing with a beveled gear 23 on a shaft 24 whiclr is at right angles to the screw shaft 20. Arranged on the shaft 24 .is a clutch sleeve 25 which is axially movable on the shaft 24 but is keyed to said shaft so that said sleeve and shaft turn together. Loosely journaled on the shaft 24 on opposite sides of the clutch sleeve are two beveled gears 26 and 27 both of which mesh with a beveled gear 28'on a shaft 29. which is driven by a pulley 30A When the sleeve 25 interloclrs with the`beveled gear 26, the shaft 24 is driven imone direction so as to feed the hollow shaft. 11 in one direction, and when the sleeve 25 interlocks with the beveled gear 27, the direction of rotation of the screw 2O is reversed as is also the direction of feed ofthe hollow shaft 11.'

The reversal of feed of the hollow` shaft 1l may be effected automatically by providing an arm 31,011 the nut 19 to operate on a rod 32 which, by a bell crank lever 33,

formed with external 'serew threads o n i `which a heajd is adapted. tobe screwed. This head 'serresas a s npport'for an adjustable bearing-36 whiclris in ,the form of a [5V disk pivoted-at 3T- on a bolt to swinglr about anA axis. eecent-ric to the axisof rotation of the head' 35i-and hollow .s haft |llfbein'gr held in its. adjustedv ,position .brabolt 3S. wh'ieh is carriediby the bearing 3G and iS adapted to work in a-slot v39 eoncent-.ric with thepivot bolt. The Ahead 'is provided `with.an

arc-shapedopeningFlO through whieh a por- 'tiorr'o` the bearingflt operates.

. The bea ring 3G serves as a support for the tool l1 whieh is preferablv in the forni of a.diSk-Sha1)ed grinding wheelhavingr a c vlind'rieal periphery. This grinding wheel is s'npportet'lon a stub shaft l2 which turns. in

thebeari'ng 3G about'an. axi` parallel with theI axis of vturning o f the head and beingr adjustable toward and! fre-ni the vaxis of turning of said head by the 'bearin r adjustment previously described. This adilrstment is .provided in order that `tl\e peripher)1 the grinding tool may proper-lyl eoperate 'withtlnrinterionwall" of theevli'nder.

For Vd riwrn'g'the grindingjtool..the shaft -42ofthelatter may he connect-ed by :i nnif'vei-salgjoixit 43h) :rehaft-Hwhieli. in turn.

is c ennee'tedhi". a uniiersal .joint to a Shaft 14.6 journal'ed on thefinaiu frameA of the. machine.' '.'lhe slnrft'.4 4.4 turns within the hollow shaft IIJ-'and tite- 'shaft`-46 is axially A.movable on' the xi'iai'n franieffo'fftheg machine.

beingttw" thigV purpose, provided with a .longitudinallyex'tending..groove which r eveeives a key on a 'pullei' 4S. the puller lo being supported on' the Alnain.' frame of the machine. against a xialmo "ment Forfeentering: tlnf'hol` i shaft 1l with relation; to--thoieylinde there lna be eln- `.played a ee-ntering:V de g-i 'hieh preferably is in the f ormofa split one llrliavinfz ita members"Aheldtog ufby' serews .i() to clamp the. eone upn. lhe'ihollow- Shaft -lil in rear of the head 35. `.lhis'oentering deviee is-.adapted to be mni'edint the. open end ofthe vcylinder S whilethe `latter is looselyY supported 'ont-h'e.supporting devices fcylinder is irudyvclampedor bolted to the supportingdevices 5, and then the centering deviee may `be removed `from t.he-.hollow shaft ll..

`When the machine iS used for grinding tel' 'the Cylinder iS lPe-rlvvcente'red. the,V

the interior of hollow c vlinilrieal bodies,

the "c vlinder h' i# first" ha* Vwork-supporting device- .'-'and' l he eentering Cilinder in proxiuiitv to the open end of' the latter and 4the ditl'erent. .n n-elizmisms are started to rotate lhe .\jha.ft ll. feed theisvhaft. 11 axially Aand rotate the Adraft lncausing the grindingr disk L to :ulvauee toward the. eloged end of the vlinder. revolve ahoutthe axiav of the shaft ll and rotate :didnt it own axia thus traveling over the. interior of thtl evlinder ina helical p ath. \\.`hen (he inner end ot' the tvlinder i xe;n'liei l. ene of the stom 3H. is engaged;.rauiiig lbe s hatt l1 to travel axiallr in the oppo ite diret'` tion in order to earrv the grinding tool toward. the open end of thnevliinler. A

From the 'loregoing it will beseen that there ha been providedva urn-hine which is adapted for internal rvl'indrieal grinding.

' l`he grinding tool which isin vthe form of a evlindr'afal disk ha A itxl o vliut'lrieal periphery travelingA in a helieal path in eontai-t. throughout width. withthe interior e ..lindrieal snrlare. 'l`hi. is set-tired b v-having the grinding di l '.turn ahontfan axisrparallel with theta-xn` about wh-ieh it-revolves and feedingr the -giiinlirigdilt iii-.the direc? ing o|eration.

'hile the invention has been described 'as a `grinding inaehine. it-"is apparent that certain part'.\l of the inaehinel 1n ay'be"e1n ploved in other inarhines. 'hat l elaim as no' invention. and desire to secure h viatters lateut is:

1. In combination with a suitable support. a rotarv hollow shaft n rmlnted for axial nioven'ieut on said support. arn'tarv g'rint'lel havin;r its a. s of rotation parallel with .the

ino

axis .of rotation of the .haft and xadjustable in parallel lines toward and front the' axis of rotation of the hollow shaft. means extending through saidshaft. for rotating the grinder with thu rotation 'of the hollow shaft, and independently adjustable work supporting devices secured-to the support. about the hollow shaft.

2. In combination with a main frame h a ving a rigid sleeve projecting therefrom and rformed with a flange at its free end. means for securing the work piet-i` to said lange. a rotary hollow Shaft movahhx axially within Said sleeve, an mljustable bearing on said shaft, a shaft turniizg in said be ring, a tool on the shaft. and means .Lvtendingiv through the hollow shaft and vonneetrd to he tool shaft for rotatii 'f .il toot.

In combina-.1bn with an open t bearing sleeve. taohcd to one end of the sleeve, a hollow shaftturning;y in sail sleeve and avally movable tlnfrein. ,i rotarv ,arimlrr mounted on said hollow slimt and .hlt )la ton :1rd and from the ot rotata 10W shaft, and meant: exon hollow Shaft for driving they grind 5. In combination with a main frame hav.- ing a rigid open-radial slr-we prix ating; therefrom and formed with a tlange t n" free end. means for seein-ing ihr work t aid aiie. a shaft nionntefl to turn in L see/ve and also inoax shaft projeetire from opg sleeve., a tool r ied one eind of said shaft, a gear wheel ann fed on the main frame at the other end of said ,f-:lefu'a and having. the sha't Connected thereto to n oie therewith but to permit the shaft to more axially with relation to said ,gear wheel., means for moving" the sgraft axially,y and means Ifor turning; the gear wheel lo ti rn the Shaft.

6.111 Combinatiaiwn with :i main frame. a rotary tool farryingy shaft mounted for axial movement on said main frame. means tor rotating the shaft. and means:y for moving the shaft axially eomprisinn a drinVL shaft. a bevel gear on the drive shaft. a shaft at right angles to the drive shaft. a pair of bevel gears mounted to turn loosely on the second mentioned shaft. a rzluleb adapted to connect either of said pair ot bowled gears to the second mentioned shaft. connection between said second mentioned shaft and the axially movable shaft to etfect sueh axial movement, a bell crank lever having one arm Connected to the clutch, a rod. oonnected to the other arm of the bell crank lever, stops on said rod1 and means moving With the axially movable shaft and operat ing between the stops to etl'eef; the shifting of the clutch.

7. ln combination with a mam trame, a rotaryv tool carrying shaft mounted for axial n'iovement on the main frame. means for rotating the shaft. and means for moving the shaft axially comprisingr a drive shaft, a beveled ,ejear on the drive shaft. a shaft at right angles te the drive shaft, a pair of bowled gears mounted to turn loosely on the serond mentioned shaft. a screw shaft driven b'v r`aid sci-ond mcntiomd shaft, a member in which the rotary axially-ino.'able shaft turns.y hai ing the serew shaft connected tin-reto. a clutch adapted to Connect either one of the pair of beveled gears with the beveled near on the drivtl shaft. a bell Crank leve having one arm connected to the clutch, a rod connected to the other arm of the bell rrank lit-ver. and adjustable stops on said rod bein een .vhrh operati-s the member which is moved by the screw shaft.

i', ln combination with a suitable support, a i'oiarj.' hollow shaft mounted for axial mowment on said support and having a. head at one end, a bearingT disk pivoted on said head to move transversely of the axis ot' the hollow shaft, about an axis eccentric to tb axis of thc hollow shaft and a rotary tool rarricd by said bearing disk.

il. In rombination with a suitable snp- `port. a rotary hollow shaft mounted for movement on said support, means for means for moving the shaft .i allyv during' such rotation. a bearing member mljnstabl"` snppmtesl on said hollow shaft to move transversely of the axis of said shaft. a tool shaft, mounted on said heal-ino, member with its axis parallel to the axe` nl the hollow shaft. a tool carried by l shail. and means for rotating the tool s all, embodying a shaft section extending through the hollow shaft and having a universal joint ronncrtion with the tool shaft at one end. and a shaft section havingr a universal joint connection with the first mentioned shaft section at its other end.

lO. In romhination with a` main frame having' a rigid sleeve projecting therefrom, means for supporting work from the outer end ol' said sleeve, a hollow shaft turning in said sleevr. mains for rotating the shaft, means for moving said shaft axially during auch rotation, a bearing` member adjustable on said hollow shaft transversely of the axis of said shaft, a shaft carried by said bearing member with its axis parallel to the axis of rotation of the hollow shaft, a tool carried by said shaft. and means for rotating;r the tool sha ft. said means extending through the hollow shaft. and having universal joints permitting the adjustment of the tool on the hollow shaft.

l1. A machine of the class described comprising a main frame having a rigid sleeve provided with a flange at one end, substantially shaped supports having bolt and zlXlni rotating' the shaft.

zulrlgmwl i0 be zxdjlwtnbl): Connected to the MWIL n slm ft arranged Centrally of said Suppm't' mld mmnblo nxvidlly.y a tool Carried by Suid shaft, und a Contel'iufl device secured tu wlw smh fm' wutrng the Work on the 1 l. A\. mmuhne of the dass described comprising urk Supporting mmms, a shaft Inovn@ axially` :i todi Carried by amid Sl1uft.:u1d vnl-k wnwl'mgj means :11:10 czu'l'ied by Said shaft tu www' du; woz-k un the Work supkpui'iing nimm. 

